[net-next-2.6.git] / drivers / gpu / drm / vmwgfx / vmwgfx_ldu.c

/**************************************************************************
 *
 * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 * USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 **************************************************************************/

#include "vmwgfx_kms.h"

#define vmw_crtc_to_ldu(x) \
	container_of(x, struct vmw_legacy_display_unit, base.crtc)
#define vmw_encoder_to_ldu(x) \
	container_of(x, struct vmw_legacy_display_unit, base.encoder)
#define vmw_connector_to_ldu(x) \
	container_of(x, struct vmw_legacy_display_unit, base.connector)

struct vmw_legacy_display {
	struct list_head active;

	unsigned num_active;
	unsigned last_num_active;

	struct vmw_framebuffer *fb;
};

/**
 * Display unit using the legacy register interface.
 */
struct vmw_legacy_display_unit {
	struct vmw_display_unit base;

	unsigned pref_width;
	unsigned pref_height;
	bool pref_active;
	struct drm_display_mode *pref_mode;

	struct list_head active;
};

static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu)
{
	list_del_init(&ldu->active);
	vmw_display_unit_cleanup(&ldu->base);
	kfree(ldu);
}


/*
 * Legacy Display Unit CRTC functions
 */

static void vmw_ldu_crtc_save(struct drm_crtc *crtc)
{
}

static void vmw_ldu_crtc_restore(struct drm_crtc *crtc)
{
}

static void vmw_ldu_crtc_gamma_set(struct drm_crtc *crtc,
				   u16 *r, u16 *g, u16 *b,
				   uint32_t start, uint32_t size)
{
}

static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc)
{
	vmw_ldu_destroy(vmw_crtc_to_ldu(crtc));
}

static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
{
	struct vmw_legacy_display *lds = dev_priv->ldu_priv;
	struct vmw_legacy_display_unit *entry;
	struct drm_framebuffer *fb = NULL;
	struct drm_crtc *crtc = NULL;
	int i = 0;

	/* If there is no display topology the host just assumes
	 * that the guest will set the same layout as the host.
	 */
	if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) {
		int w = 0, h = 0;
		list_for_each_entry(entry, &lds->active, active) {
			crtc = &entry->base.crtc;
			w = max(w, crtc->x + crtc->mode.hdisplay);
			h = max(h, crtc->y + crtc->mode.vdisplay);
			i++;
		}

		if (crtc == NULL)
			return 0;
		fb = entry->base.crtc.fb;

		vmw_kms_write_svga(dev_priv, w, h, fb->pitch,
				   fb->bits_per_pixel, fb->depth);

		return 0;
	}

	if (!list_empty(&lds->active)) {
		entry = list_entry(lds->active.next, typeof(*entry), active);
		fb = entry->base.crtc.fb;

		vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitch,
				   fb->bits_per_pixel, fb->depth);
	}

	/* Make sure we always show something. */
	vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS,
		  lds->num_active ? lds->num_active : 1);

	i = 0;
	list_for_each_entry(entry, &lds->active, active) {
		crtc = &entry->base.crtc;

		vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
		vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
		vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x);
		vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y);
		vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay);
		vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay);
		vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);

		i++;
	}

	BUG_ON(i != lds->num_active);

	lds->last_num_active = lds->num_active;

	return 0;
}

static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
			      struct vmw_legacy_display_unit *ldu)
{
	struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
	if (list_empty(&ldu->active))
		return 0;

	/* Must init otherwise list_empty(&ldu->active) will not work. */
	list_del_init(&ldu->active);
	if (--(ld->num_active) == 0) {
		BUG_ON(!ld->fb);
		if (ld->fb->unpin)
			ld->fb->unpin(ld->fb);
		ld->fb = NULL;
	}

	return 0;
}

static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
			      struct vmw_legacy_display_unit *ldu,
			      struct vmw_framebuffer *vfb)
{
	struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
	struct vmw_legacy_display_unit *entry;
	struct list_head *at;

	BUG_ON(!ld->num_active && ld->fb);
	if (vfb != ld->fb) {
		if (ld->fb && ld->fb->unpin)
			ld->fb->unpin(ld->fb);
		if (vfb->pin)
			vfb->pin(vfb);
		ld->fb = vfb;
	}

	if (!list_empty(&ldu->active))
		return 0;

	at = &ld->active;
	list_for_each_entry(entry, &ld->active, active) {
		if (entry->base.unit > ldu->base.unit)
			break;

		at = &entry->active;
	}

	list_add(&ldu->active, at);

	ld->num_active++;

	return 0;
}

static int vmw_ldu_crtc_set_config(struct drm_mode_set *set)
{
	struct vmw_private *dev_priv;
	struct vmw_legacy_display_unit *ldu;
	struct drm_connector *connector;
	struct drm_display_mode *mode;
	struct drm_encoder *encoder;
	struct vmw_framebuffer *vfb;
	struct drm_framebuffer *fb;
	struct drm_crtc *crtc;

	if (!set)
		return -EINVAL;

	if (!set->crtc)
		return -EINVAL;

	/* get the ldu */
	crtc = set->crtc;
	ldu = vmw_crtc_to_ldu(crtc);
	vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL;
	dev_priv = vmw_priv(crtc->dev);

	if (set->num_connectors > 1) {
		DRM_ERROR("to many connectors\n");
		return -EINVAL;
	}

	if (set->num_connectors == 1 &&
	    set->connectors[0] != &ldu->base.connector) {
		DRM_ERROR("connector doesn't match %p %p\n",
			set->connectors[0], &ldu->base.connector);
		return -EINVAL;
	}

	/* ldu only supports one fb active at the time */
	if (dev_priv->ldu_priv->fb && vfb &&
	    !(dev_priv->ldu_priv->num_active == 1 &&
	      !list_empty(&ldu->active)) &&
	    dev_priv->ldu_priv->fb != vfb) {
		DRM_ERROR("Multiple framebuffers not supported\n");
		return -EINVAL;
	}

	/* since they always map one to one these are safe */
	connector = &ldu->base.connector;
	encoder = &ldu->base.encoder;

	/* should we turn the crtc off? */
	if (set->num_connectors == 0 || !set->mode || !set->fb) {

		connector->encoder = NULL;
		encoder->crtc = NULL;
		crtc->fb = NULL;

		vmw_ldu_del_active(dev_priv, ldu);

		vmw_ldu_commit_list(dev_priv);

		return 0;
	}


	/* we now know we want to set a mode */
	mode = set->mode;
	fb = set->fb;

	if (set->x + mode->hdisplay > fb->width ||
	    set->y + mode->vdisplay > fb->height) {
		DRM_ERROR("set outside of framebuffer\n");
		return -EINVAL;
	}

	vmw_fb_off(dev_priv);

	crtc->fb = fb;
	encoder->crtc = crtc;
	connector->encoder = encoder;
	crtc->x = set->x;
	crtc->y = set->y;
	crtc->mode = *mode;

	vmw_ldu_add_active(dev_priv, ldu, vfb);

	vmw_ldu_commit_list(dev_priv);

	return 0;
}

static struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
	.save = vmw_ldu_crtc_save,
	.restore = vmw_ldu_crtc_restore,
	.cursor_set = vmw_du_crtc_cursor_set,
	.cursor_move = vmw_du_crtc_cursor_move,
	.gamma_set = vmw_ldu_crtc_gamma_set,
	.destroy = vmw_ldu_crtc_destroy,
	.set_config = vmw_ldu_crtc_set_config,
};

/*
 * Legacy Display Unit encoder functions
 */

static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
{
	vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
}

static struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
	.destroy = vmw_ldu_encoder_destroy,
};

/*
 * Legacy Display Unit connector functions
 */

static void vmw_ldu_connector_dpms(struct drm_connector *connector, int mode)
{
}

static void vmw_ldu_connector_save(struct drm_connector *connector)
{
}

static void vmw_ldu_connector_restore(struct drm_connector *connector)
{
}

static enum drm_connector_status
	vmw_ldu_connector_detect(struct drm_connector *connector)
{
	if (vmw_connector_to_ldu(connector)->pref_active)
		return connector_status_connected;
	return connector_status_disconnected;
}

static struct drm_display_mode vmw_ldu_connector_builtin[] = {
	/* 640x480@60Hz */
	{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
		   752, 800, 0, 480, 489, 492, 525, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
	/* 800x600@60Hz */
	{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
		   968, 1056, 0, 600, 601, 605, 628, 0,
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1024x768@60Hz */
	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
		   1184, 1344, 0, 768, 771, 777, 806, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
	/* 1152x864@75Hz */
	{ DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
		   1344, 1600, 0, 864, 865, 868, 900, 0,
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1280x768@60Hz */
	{ DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
		   1472, 1664, 0, 768, 771, 778, 798, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1280x800@60Hz */
	{ DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
		   1480, 1680, 0, 800, 803, 809, 831, 0,
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
	/* 1280x960@60Hz */
	{ DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
		   1488, 1800, 0, 960, 961, 964, 1000, 0,
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1280x1024@60Hz */
	{ DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
		   1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1360x768@60Hz */
	{ DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
		   1536, 1792, 0, 768, 771, 777, 795, 0,
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1440x1050@60Hz */
	{ DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
		   1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1440x900@60Hz */
	{ DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
		   1672, 1904, 0, 900, 903, 909, 934, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1600x1200@60Hz */
	{ DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
		   1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1680x1050@60Hz */
	{ DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
		   1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1792x1344@60Hz */
	{ DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
		   2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1853x1392@60Hz */
	{ DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
		   2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1920x1200@60Hz */
	{ DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
		   2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 1920x1440@60Hz */
	{ DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
		   2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* 2560x1600@60Hz */
	{ DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
		   3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
	/* Terminate */
	{ DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
};

static int vmw_ldu_connector_fill_modes(struct drm_connector *connector,
					uint32_t max_width, uint32_t max_height)
{
	struct vmw_legacy_display_unit *ldu = vmw_connector_to_ldu(connector);
	struct drm_device *dev = connector->dev;
	struct drm_display_mode *mode = NULL;
	struct drm_display_mode prefmode = { DRM_MODE("preferred",
		DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
		DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
	};
	int i;

	/* Add preferred mode */
	{
		mode = drm_mode_duplicate(dev, &prefmode);
		if (!mode)
			return 0;
		mode->hdisplay = ldu->pref_width;
		mode->vdisplay = ldu->pref_height;
		mode->vrefresh = drm_mode_vrefresh(mode);
		drm_mode_probed_add(connector, mode);

		if (ldu->pref_mode) {
			list_del_init(&ldu->pref_mode->head);
			drm_mode_destroy(dev, ldu->pref_mode);
		}

		ldu->pref_mode = mode;
	}

	for (i = 0; vmw_ldu_connector_builtin[i].type != 0; i++) {
		if (vmw_ldu_connector_builtin[i].hdisplay > max_width ||
		    vmw_ldu_connector_builtin[i].vdisplay > max_height)
			continue;

		mode = drm_mode_duplicate(dev, &vmw_ldu_connector_builtin[i]);
		if (!mode)
			return 0;
		mode->vrefresh = drm_mode_vrefresh(mode);

		drm_mode_probed_add(connector, mode);
	}

	drm_mode_connector_list_update(connector);

	return 1;
}

static int vmw_ldu_connector_set_property(struct drm_connector *connector,
					  struct drm_property *property,
					  uint64_t val)
{
	return 0;
}

static void vmw_ldu_connector_destroy(struct drm_connector *connector)
{
	vmw_ldu_destroy(vmw_connector_to_ldu(connector));
}

static struct drm_connector_funcs vmw_legacy_connector_funcs = {
	.dpms = vmw_ldu_connector_dpms,
	.save = vmw_ldu_connector_save,
	.restore = vmw_ldu_connector_restore,
	.detect = vmw_ldu_connector_detect,
	.fill_modes = vmw_ldu_connector_fill_modes,
	.set_property = vmw_ldu_connector_set_property,
	.destroy = vmw_ldu_connector_destroy,
};

static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
{
	struct vmw_legacy_display_unit *ldu;
	struct drm_device *dev = dev_priv->dev;
	struct drm_connector *connector;
	struct drm_encoder *encoder;
	struct drm_crtc *crtc;

	ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
	if (!ldu)
		return -ENOMEM;

	ldu->base.unit = unit;
	crtc = &ldu->base.crtc;
	encoder = &ldu->base.encoder;
	connector = &ldu->base.connector;

	INIT_LIST_HEAD(&ldu->active);

	ldu->pref_active = (unit == 0);
	ldu->pref_width = 800;
	ldu->pref_height = 600;
	ldu->pref_mode = NULL;

	drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
			   DRM_MODE_CONNECTOR_LVDS);
	connector->status = vmw_ldu_connector_detect(connector);

	drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
			 DRM_MODE_ENCODER_LVDS);
	drm_mode_connector_attach_encoder(connector, encoder);
	encoder->possible_crtcs = (1 << unit);
	encoder->possible_clones = 0;

	drm_crtc_init(dev, crtc, &vmw_legacy_crtc_funcs);

	drm_connector_attach_property(connector,
				      dev->mode_config.dirty_info_property,
				      1);

	return 0;
}

int vmw_kms_init_legacy_display_system(struct vmw_private *dev_priv)
{
	if (dev_priv->ldu_priv) {
		DRM_INFO("ldu system already on\n");
		return -EINVAL;
	}

	dev_priv->ldu_priv = kmalloc(GFP_KERNEL, sizeof(*dev_priv->ldu_priv));

	if (!dev_priv->ldu_priv)
		return -ENOMEM;

	INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
	dev_priv->ldu_priv->num_active = 0;
	dev_priv->ldu_priv->last_num_active = 0;
	dev_priv->ldu_priv->fb = NULL;

	drm_mode_create_dirty_info_property(dev_priv->dev);

	vmw_ldu_init(dev_priv, 0);
	/* for old hardware without multimon only enable one display */
	if (dev_priv->capabilities & SVGA_CAP_MULTIMON) {
		vmw_ldu_init(dev_priv, 1);
		vmw_ldu_init(dev_priv, 2);
		vmw_ldu_init(dev_priv, 3);
		vmw_ldu_init(dev_priv, 4);
		vmw_ldu_init(dev_priv, 5);
		vmw_ldu_init(dev_priv, 6);
		vmw_ldu_init(dev_priv, 7);
	}

	return 0;
}

int vmw_kms_close_legacy_display_system(struct vmw_private *dev_priv)
{
	if (!dev_priv->ldu_priv)
		return -ENOSYS;

	BUG_ON(!list_empty(&dev_priv->ldu_priv->active));

	kfree(dev_priv->ldu_priv);

	return 0;
}

int vmw_kms_ldu_update_layout(struct vmw_private *dev_priv, unsigned num,
			      struct drm_vmw_rect *rects)
{
	struct drm_device *dev = dev_priv->dev;
	struct vmw_legacy_display_unit *ldu;
	struct drm_connector *con;
	int i;

	mutex_lock(&dev->mode_config.mutex);

#if 0
	DRM_INFO("%s: new layout ", __func__);
	for (i = 0; i < (int)num; i++)
		DRM_INFO("(%i, %i %ux%u) ", rects[i].x, rects[i].y,
			 rects[i].w, rects[i].h);
	DRM_INFO("\n");
#else
	(void)i;
#endif

	list_for_each_entry(con, &dev->mode_config.connector_list, head) {
		ldu = vmw_connector_to_ldu(con);
		if (num > ldu->base.unit) {
			ldu->pref_width = rects[ldu->base.unit].w;
			ldu->pref_height = rects[ldu->base.unit].h;
			ldu->pref_active = true;
		} else {
			ldu->pref_width = 800;
			ldu->pref_height = 600;
			ldu->pref_active = false;
		}
		con->status = vmw_ldu_connector_detect(con);
	}

	mutex_unlock(&dev->mode_config.mutex);

	return 0;
}
Commit	Line	Data
fb1d9738 JB	1	/**************************************************************************
	2	*
	3	* Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
	4	* All Rights Reserved.
	5	*
	6	* Permission is hereby granted, free of charge, to any person obtaining a
	7	* copy of this software and associated documentation files (the
	8	* "Software"), to deal in the Software without restriction, including
	9	* without limitation the rights to use, copy, modify, merge, publish,
	10	* distribute, sub license, and/or sell copies of the Software, and to
	11	* permit persons to whom the Software is furnished to do so, subject to
	12	* the following conditions:
	13	*
	14	* The above copyright notice and this permission notice (including the
	15	* next paragraph) shall be included in all copies or substantial portions
	16	* of the Software.
	17	*
	18	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	19	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	20	* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
	21	* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
	22	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
	23	* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
	24	* USE OR OTHER DEALINGS IN THE SOFTWARE.
	25	*
	26	**************************************************************************/
	27
	28	#include "vmwgfx_kms.h"
	29
	30	#define vmw_crtc_to_ldu(x) \
	31	container_of(x, struct vmw_legacy_display_unit, base.crtc)
	32	#define vmw_encoder_to_ldu(x) \
	33	container_of(x, struct vmw_legacy_display_unit, base.encoder)
	34	#define vmw_connector_to_ldu(x) \
	35	container_of(x, struct vmw_legacy_display_unit, base.connector)
	36
	37	struct vmw_legacy_display {
	38	struct list_head active;
	39
	40	unsigned num_active;
d7e1958d	41	unsigned last_num_active;
fb1d9738 JB	42
	43	struct vmw_framebuffer *fb;
	44	};
	45
	46	/**
	47	* Display unit using the legacy register interface.
	48	*/
	49	struct vmw_legacy_display_unit {
	50	struct vmw_display_unit base;
	51
d8bd19d2 JB	52	unsigned pref_width;
	53	unsigned pref_height;
	54	bool pref_active;
	55	struct drm_display_mode *pref_mode;
	56
fb1d9738	57	struct list_head active;
fb1d9738 JB	58	};
	59
	60	static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu)
	61	{
	62	list_del_init(&ldu->active);
	63	vmw_display_unit_cleanup(&ldu->base);
	64	kfree(ldu);
	65	}
	66
	67
	68	/*
	69	* Legacy Display Unit CRTC functions
	70	*/
	71
	72	static void vmw_ldu_crtc_save(struct drm_crtc *crtc)
	73	{
	74	}
	75
	76	static void vmw_ldu_crtc_restore(struct drm_crtc *crtc)
	77	{
	78	}
	79
	80	static void vmw_ldu_crtc_gamma_set(struct drm_crtc *crtc,
	81	u16 r, u16 g, u16 *b,
7203425a	82	uint32_t start, uint32_t size)
fb1d9738 JB	83	{
	84	}
	85
	86	static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc)
	87	{
	88	vmw_ldu_destroy(vmw_crtc_to_ldu(crtc));
	89	}
	90
	91	static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
	92	{
	93	struct vmw_legacy_display *lds = dev_priv->ldu_priv;
	94	struct vmw_legacy_display_unit *entry;
d7e1958d JB	95	struct drm_framebuffer *fb = NULL;
d7e1958d JB	96	struct drm_crtc *crtc = NULL;
fb1d9738 JB	97	int i = 0;
fb1d9738 JB	98
d7e1958d JB	99	/* If there is no display topology the host just assumes
	100	* that the guest will set the same layout as the host.
	101	*/
	102	if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) {
	103	int w = 0, h = 0;
	104	list_for_each_entry(entry, &lds->active, active) {
	105	crtc = &entry->base.crtc;
	106	w = max(w, crtc->x + crtc->mode.hdisplay);
	107	h = max(h, crtc->y + crtc->mode.vdisplay);
	108	i++;
	109	}
	110
	111	if (crtc == NULL)
	112	return 0;
	113	fb = entry->base.crtc.fb;
	114
d7e1958d JB	115	vmw_kms_write_svga(dev_priv, w, h, fb->pitch,
d7e1958d JB	116	fb->bits_per_pixel, fb->depth);
d7e1958d JB	117
	118	return 0;
	119	}
	120
d7e1958d JB	121	if (!list_empty(&lds->active)) {
	122	entry = list_entry(lds->active.next, typeof(*entry), active);
	123	fb = entry->base.crtc.fb;
	124
	125	vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitch,
	126	fb->bits_per_pixel, fb->depth);
	127	}
	128
259600d5 JB	129	/* Make sure we always show something. */
	130	vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS,
	131	lds->num_active ? lds->num_active : 1);
	132
fb1d9738 JB	133	i = 0;
	134	list_for_each_entry(entry, &lds->active, active) {
	135	crtc = &entry->base.crtc;
	136
	137	vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
	138	vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
	139	vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x);
	140	vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y);
	141	vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay);
	142	vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay);
	143	vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
	144
	145	i++;
	146	}
	147
d7e1958d JB	148	BUG_ON(i != lds->num_active);
	149
	150	lds->last_num_active = lds->num_active;
	151
fb1d9738 JB	152	return 0;
	153	}
	154
	155	static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
	156	struct vmw_legacy_display_unit *ldu)
	157	{
	158	struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
	159	if (list_empty(&ldu->active))
	160	return 0;
	161
6a591a96	162	/* Must init otherwise list_empty(&ldu->active) will not work. */
fb1d9738 JB	163	list_del_init(&ldu->active);
	164	if (--(ld->num_active) == 0) {
	165	BUG_ON(!ld->fb);
	166	if (ld->fb->unpin)
	167	ld->fb->unpin(ld->fb);
	168	ld->fb = NULL;
	169	}
	170
	171	return 0;
	172	}
	173
	174	static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
	175	struct vmw_legacy_display_unit *ldu,
	176	struct vmw_framebuffer *vfb)
	177	{
	178	struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
	179	struct vmw_legacy_display_unit *entry;
	180	struct list_head *at;
	181
04e9e94d JB	182	BUG_ON(!ld->num_active && ld->fb);
	183	if (vfb != ld->fb) {
	184	if (ld->fb && ld->fb->unpin)
	185	ld->fb->unpin(ld->fb);
	186	if (vfb->pin)
	187	vfb->pin(vfb);
	188	ld->fb = vfb;
	189	}
	190
fb1d9738 JB	191	if (!list_empty(&ldu->active))
	192	return 0;
	193
	194	at = &ld->active;
	195	list_for_each_entry(entry, &ld->active, active) {
bbfad336	196	if (entry->base.unit > ldu->base.unit)
fb1d9738 JB	197	break;
	198
	199	at = &entry->active;
	200	}
	201
	202	list_add(&ldu->active, at);
04e9e94d JB	203
04e9e94d JB	204	ld->num_active++;
fb1d9738 JB	205
	206	return 0;
	207	}
	208
	209	static int vmw_ldu_crtc_set_config(struct drm_mode_set *set)
	210	{
	211	struct vmw_private *dev_priv;
	212	struct vmw_legacy_display_unit *ldu;
	213	struct drm_connector *connector;
	214	struct drm_display_mode *mode;
	215	struct drm_encoder *encoder;
	216	struct vmw_framebuffer *vfb;
	217	struct drm_framebuffer *fb;
	218	struct drm_crtc *crtc;
	219
	220	if (!set)
	221	return -EINVAL;
	222
	223	if (!set->crtc)
	224	return -EINVAL;
	225
	226	/* get the ldu */
	227	crtc = set->crtc;
	228	ldu = vmw_crtc_to_ldu(crtc);
	229	vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL;
	230	dev_priv = vmw_priv(crtc->dev);
	231
	232	if (set->num_connectors > 1) {
	233	DRM_ERROR("to many connectors\n");
	234	return -EINVAL;
	235	}
	236
	237	if (set->num_connectors == 1 &&
	238	set->connectors[0] != &ldu->base.connector) {
	239	DRM_ERROR("connector doesn't match %p %p\n",
	240	set->connectors[0], &ldu->base.connector);
	241	return -EINVAL;
	242	}
	243
	244	/* ldu only supports one fb active at the time */
	245	if (dev_priv->ldu_priv->fb && vfb &&
6a591a96 JB	246	!(dev_priv->ldu_priv->num_active == 1 &&
6a591a96 JB	247	!list_empty(&ldu->active)) &&
fb1d9738 JB	248	dev_priv->ldu_priv->fb != vfb) {
	249	DRM_ERROR("Multiple framebuffers not supported\n");
	250	return -EINVAL;
	251	}
	252
	253	/* since they always map one to one these are safe */
	254	connector = &ldu->base.connector;
	255	encoder = &ldu->base.encoder;
	256
	257	/* should we turn the crtc off? */
	258	if (set->num_connectors == 0 \|\| !set->mode \|\| !set->fb) {
	259
	260	connector->encoder = NULL;
	261	encoder->crtc = NULL;
	262	crtc->fb = NULL;
	263
	264	vmw_ldu_del_active(dev_priv, ldu);
	265
	266	vmw_ldu_commit_list(dev_priv);
	267
	268	return 0;
	269	}
	270
	271
	272	/* we now know we want to set a mode */
	273	mode = set->mode;
	274	fb = set->fb;
	275
	276	if (set->x + mode->hdisplay > fb->width \|\|
	277	set->y + mode->vdisplay > fb->height) {
	278	DRM_ERROR("set outside of framebuffer\n");
	279	return -EINVAL;
	280	}
	281
	282	vmw_fb_off(dev_priv);
	283
	284	crtc->fb = fb;
	285	encoder->crtc = crtc;
	286	connector->encoder = encoder;
	287	crtc->x = set->x;
	288	crtc->y = set->y;
	289	crtc->mode = *mode;
	290
	291	vmw_ldu_add_active(dev_priv, ldu, vfb);
	292
	293	vmw_ldu_commit_list(dev_priv);
	294
	295	return 0;
	296	}
	297
	298	static struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
	299	.save = vmw_ldu_crtc_save,
	300	.restore = vmw_ldu_crtc_restore,
	301	.cursor_set = vmw_du_crtc_cursor_set,
	302	.cursor_move = vmw_du_crtc_cursor_move,
	303	.gamma_set = vmw_ldu_crtc_gamma_set,
	304	.destroy = vmw_ldu_crtc_destroy,
	305	.set_config = vmw_ldu_crtc_set_config,
	306	};
	307
	308	/*
	309	* Legacy Display Unit encoder functions
	310	*/
	311
312	static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
313	{
314	vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
315	}
316
317	static struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
318	.destroy = vmw_ldu_encoder_destroy,
319	};
320
321	/*
322	* Legacy Display Unit connector functions
323	*/
324
325	static void vmw_ldu_connector_dpms(struct drm_connector *connector, int mode)
326	{
327	}
328
329	static void vmw_ldu_connector_save(struct drm_connector *connector)
330	{
331	}
332
333	static void vmw_ldu_connector_restore(struct drm_connector *connector)
334	{
335	}
336
337	static enum drm_connector_status
338	vmw_ldu_connector_detect(struct drm_connector *connector)
339	{
d8bd19d2	340	if (vmw_connector_to_ldu(connector)->pref_active)
fb1d9738 JB	341	return connector_status_connected;
	342	return connector_status_disconnected;
	343	}
	344
	345	static struct drm_display_mode vmw_ldu_connector_builtin[] = {
	346	/* 640x480@60Hz */
	347	{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
	348	752, 800, 0, 480, 489, 492, 525, 0,
	349	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_NVSYNC) },
	350	/* 800x600@60Hz */
d8bd19d2 JB	351	{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
	352	968, 1056, 0, 600, 601, 605, 628, 0,
	353	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
fb1d9738 JB	354	/* 1024x768@60Hz */
	355	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
	356	1184, 1344, 0, 768, 771, 777, 806, 0,
	357	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_NVSYNC) },
	358	/* 1152x864@75Hz */
	359	{ DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
	360	1344, 1600, 0, 864, 865, 868, 900, 0,
	361	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
	362	/* 1280x768@60Hz */
	363	{ DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
	364	1472, 1664, 0, 768, 771, 778, 798, 0,
	365	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
	366	/* 1280x800@60Hz */
	367	{ DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
	368	1480, 1680, 0, 800, 803, 809, 831, 0,
	369	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_NVSYNC) },
	370	/* 1280x960@60Hz */
	371	{ DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
	372	1488, 1800, 0, 960, 961, 964, 1000, 0,
	373	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
	374	/* 1280x1024@60Hz */
	375	{ DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
	376	1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
	377	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
	378	/* 1360x768@60Hz */
	379	{ DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
	380	1536, 1792, 0, 768, 771, 777, 795, 0,
	381	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
	382	/* 1440x1050@60Hz */
	383	{ DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
	384	1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
	385	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
	386	/* 1440x900@60Hz */
	387	{ DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
	388	1672, 1904, 0, 900, 903, 909, 934, 0,
	389	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
	390	/* 1600x1200@60Hz */
	391	{ DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
	392	1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
	393	DRM_MODE_FLAG_PHSYNC \| DRM_MODE_FLAG_PVSYNC) },
	394	/* 1680x1050@60Hz */
	395	{ DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
	396	1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
	397	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
	398	/* 1792x1344@60Hz */
	399	{ DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
	400	2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
	401	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
	402	/* 1853x1392@60Hz */
	403	{ DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
	404	2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
	405	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
	406	/* 1920x1200@60Hz */
	407	{ DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
	408	2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
	409	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
	410	/* 1920x1440@60Hz */
	411	{ DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
	412	2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
	413	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
	414	/* 2560x1600@60Hz */
	415	{ DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
	416	3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
	417	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC) },
418	/* Terminate */
419	{ DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
420	};
421
422	static int vmw_ldu_connector_fill_modes(struct drm_connector *connector,
423	uint32_t max_width, uint32_t max_height)
424	{
d8bd19d2	425	struct vmw_legacy_display_unit *ldu = vmw_connector_to_ldu(connector);
fb1d9738 JB	426	struct drm_device *dev = connector->dev;
fb1d9738 JB	427	struct drm_display_mode *mode = NULL;
d8bd19d2 JB	428	struct drm_display_mode prefmode = { DRM_MODE("preferred",
	429	DRM_MODE_TYPE_DRIVER \| DRM_MODE_TYPE_PREFERRED,
	430	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	431	DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_PVSYNC)
	432	};
fb1d9738 JB	433	int i;
fb1d9738 JB	434
d8bd19d2 JB	435	/* Add preferred mode */
	436	{
	437	mode = drm_mode_duplicate(dev, &prefmode);
	438	if (!mode)
	439	return 0;
	440	mode->hdisplay = ldu->pref_width;
	441	mode->vdisplay = ldu->pref_height;
	442	mode->vrefresh = drm_mode_vrefresh(mode);
	443	drm_mode_probed_add(connector, mode);
	444
	445	if (ldu->pref_mode) {
	446	list_del_init(&ldu->pref_mode->head);
	447	drm_mode_destroy(dev, ldu->pref_mode);
	448	}
	449
	450	ldu->pref_mode = mode;
	451	}
	452
fb1d9738 JB	453	for (i = 0; vmw_ldu_connector_builtin[i].type != 0; i++) {
	454	if (vmw_ldu_connector_builtin[i].hdisplay > max_width \|\|
	455	vmw_ldu_connector_builtin[i].vdisplay > max_height)
	456	continue;
	457
	458	mode = drm_mode_duplicate(dev, &vmw_ldu_connector_builtin[i]);
	459	if (!mode)
	460	return 0;
	461	mode->vrefresh = drm_mode_vrefresh(mode);
	462
	463	drm_mode_probed_add(connector, mode);
	464	}
	465
	466	drm_mode_connector_list_update(connector);
	467
	468	return 1;
	469	}
	470
	471	static int vmw_ldu_connector_set_property(struct drm_connector *connector,
	472	struct drm_property *property,
	473	uint64_t val)
	474	{
	475	return 0;
	476	}
	477
	478	static void vmw_ldu_connector_destroy(struct drm_connector *connector)
	479	{
	480	vmw_ldu_destroy(vmw_connector_to_ldu(connector));
	481	}
	482
	483	static struct drm_connector_funcs vmw_legacy_connector_funcs = {
	484	.dpms = vmw_ldu_connector_dpms,
	485	.save = vmw_ldu_connector_save,
	486	.restore = vmw_ldu_connector_restore,
	487	.detect = vmw_ldu_connector_detect,
	488	.fill_modes = vmw_ldu_connector_fill_modes,
	489	.set_property = vmw_ldu_connector_set_property,
	490	.destroy = vmw_ldu_connector_destroy,
	491	};
	492
	493	static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
	494	{
	495	struct vmw_legacy_display_unit *ldu;
	496	struct drm_device *dev = dev_priv->dev;
	497	struct drm_connector *connector;
	498	struct drm_encoder *encoder;
	499	struct drm_crtc *crtc;
	500
	501	ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
	502	if (!ldu)
	503	return -ENOMEM;
	504
bbfad336	505	ldu->base.unit = unit;
fb1d9738 JB	506	crtc = &ldu->base.crtc;
	507	encoder = &ldu->base.encoder;
	508	connector = &ldu->base.connector;
	509
1ae1ddd5 JB	510	INIT_LIST_HEAD(&ldu->active);
1ae1ddd5 JB	511
d8bd19d2 JB	512	ldu->pref_active = (unit == 0);
	513	ldu->pref_width = 800;
	514	ldu->pref_height = 600;
	515	ldu->pref_mode = NULL;
	516
fb1d9738 JB	517	drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
fb1d9738 JB	518	DRM_MODE_CONNECTOR_LVDS);
1ae1ddd5	519	connector->status = vmw_ldu_connector_detect(connector);
fb1d9738 JB	520
	521	drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
	522	DRM_MODE_ENCODER_LVDS);
	523	drm_mode_connector_attach_encoder(connector, encoder);
	524	encoder->possible_crtcs = (1 << unit);
	525	encoder->possible_clones = 0;
	526
fb1d9738 JB	527	drm_crtc_init(dev, crtc, &vmw_legacy_crtc_funcs);
	528
	529	drm_connector_attach_property(connector,
	530	dev->mode_config.dirty_info_property,
	531	1);
	532
	533	return 0;
	534	}
	535
	536	int vmw_kms_init_legacy_display_system(struct vmw_private *dev_priv)
	537	{
	538	if (dev_priv->ldu_priv) {
	539	DRM_INFO("ldu system already on\n");
	540	return -EINVAL;
	541	}
	542
	543	dev_priv->ldu_priv = kmalloc(GFP_KERNEL, sizeof(*dev_priv->ldu_priv));
	544
	545	if (!dev_priv->ldu_priv)
	546	return -ENOMEM;
	547
	548	INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
	549	dev_priv->ldu_priv->num_active = 0;
d7e1958d	550	dev_priv->ldu_priv->last_num_active = 0;
fb1d9738 JB	551	dev_priv->ldu_priv->fb = NULL;
	552
	553	drm_mode_create_dirty_info_property(dev_priv->dev);
	554
	555	vmw_ldu_init(dev_priv, 0);
d7e1958d JB	556	/* for old hardware without multimon only enable one display */
	557	if (dev_priv->capabilities & SVGA_CAP_MULTIMON) {
	558	vmw_ldu_init(dev_priv, 1);
	559	vmw_ldu_init(dev_priv, 2);
	560	vmw_ldu_init(dev_priv, 3);
	561	vmw_ldu_init(dev_priv, 4);
	562	vmw_ldu_init(dev_priv, 5);
	563	vmw_ldu_init(dev_priv, 6);
	564	vmw_ldu_init(dev_priv, 7);
	565	}
fb1d9738 JB	566
	567	return 0;
	568	}
	569
	570	int vmw_kms_close_legacy_display_system(struct vmw_private *dev_priv)
	571	{
	572	if (!dev_priv->ldu_priv)
	573	return -ENOSYS;
	574
	575	BUG_ON(!list_empty(&dev_priv->ldu_priv->active));
	576
	577	kfree(dev_priv->ldu_priv);
	578
	579	return 0;
	580	}
d8bd19d2 JB	581
	582	int vmw_kms_ldu_update_layout(struct vmw_private *dev_priv, unsigned num,
	583	struct drm_vmw_rect *rects)
	584	{
	585	struct drm_device *dev = dev_priv->dev;
	586	struct vmw_legacy_display_unit *ldu;
	587	struct drm_connector *con;
	588	int i;
	589
	590	mutex_lock(&dev->mode_config.mutex);
	591
	592	#if 0
	593	DRM_INFO("%s: new layout ", __func__);
	594	for (i = 0; i < (int)num; i++)
	595	DRM_INFO("(%i, %i %ux%u) ", rects[i].x, rects[i].y,
	596	rects[i].w, rects[i].h);
	597	DRM_INFO("\n");
	598	#else
	599	(void)i;
	600	#endif
	601
	602	list_for_each_entry(con, &dev->mode_config.connector_list, head) {
	603	ldu = vmw_connector_to_ldu(con);
	604	if (num > ldu->base.unit) {
	605	ldu->pref_width = rects[ldu->base.unit].w;
	606	ldu->pref_height = rects[ldu->base.unit].h;
	607	ldu->pref_active = true;
	608	} else {
	609	ldu->pref_width = 800;
	610	ldu->pref_height = 600;
	611	ldu->pref_active = false;
	612	}
	613	con->status = vmw_ldu_connector_detect(con);
	614	}
	615
	616	mutex_unlock(&dev->mode_config.mutex);
	617
	618	return 0;
	619	}